ENH: Remove unconditionally true statement

[CTest: warning matched] /Users/builder/externalModules/Filtering/ImageCompare/test/itkSimilarityIndexImageFilterTest.cxx:63:18:
warning: result of comparison of 0 <= unsigned expression is always true [-Wtautological-unsigned-zero-compare]
   63 |       if (lower1 <= count && count <= upper1)
      |           ~~~~~~ ^  ~~~~~
[CTest: warning suppressed] 1 warning generated.

Modules/Filtering/ImageCompare/test/itkSimilarityIndexImageFilterTest.cxx

@@ -45,11 +45,10 @@ itkSimilarityIndexImageFilterTest(int, char *[])
   image1->Allocate();
   image2->Allocate();
 
-  const unsigned long     numOfPixels = image1->GetBufferedRegion().GetNumberOfPixels();
-  constexpr unsigned long lower1 = 0;
-  const unsigned long     upper1 = static_cast<unsigned long>(static_cast<double>(numOfPixels) * 0.75) - 1;
-  const auto              lower2 = static_cast<unsigned long>(static_cast<double>(numOfPixels) * 0.25);
-  const unsigned long     upper2 = numOfPixels - 1;
+  const unsigned long numOfPixels = image1->GetBufferedRegion().GetNumberOfPixels();
+  const unsigned long upper1 = static_cast<unsigned long>(static_cast<double>(numOfPixels) * 0.75) - 1;
+  const auto          lower2 = static_cast<unsigned long>(static_cast<double>(numOfPixels) * 0.25);
+  const unsigned long upper2 = numOfPixels - 1;
 
   itk::ImageRegionIterator<Image1Type> it1(image1, image1->GetBufferedRegion());
   itk::ImageRegionIterator<Image2Type> it2(image2, image2->GetBufferedRegion());
@@ -60,7 +59,7 @@ itkSimilarityIndexImageFilterTest(int, char *[])
 
     if (!it1.IsAtEnd())
     {
-      if (lower1 <= count && count <= upper1)
+      if (count <= upper1)
       {
         it1.Set(5);
       }